[英语四级作文]英语四级作文写作模板(图表类)

英语四级图表类作文万能模板英语四级图表类作文万能模板导语：英语四级考试中作文是拉分差距较大的题型，如何让自己的作文更出彩?除了考前多练笔，根据模板进行仿写也是非常实用的方法，小编为大家准备了图表类英语四级作文模板，供您参考，有需要的同学赶紧收藏起来吧!图表类作文的写法不难，总结起来可以分为三个部分来写，第一段分析图表表明了一个什么问题，接下来具体分析图表各部分内容(一般是分析原因)，最后阐述自己的观点。

小编为大家提供三种万能模板，用以下三种形式写图表作文，助你得高分哦!高分模板1What is shown in the chart / graph / diagram / table above indicates that in recent years, more and more people pay attention to _________. The number of those who _________ has increased ________, and furthermore,____________.There are two factors responsible for the changes. In the first place,_________. Moreover,__________. Yet, it is noticeable that __________.From the analysis, we can safely draw the conclusion that__________. It is possible that in the future, the tendency will__________.高分模板2According to the chart / graph / diagram / table, we clearly learn that _________. As early as _________,___________. Then,_________. Last,__________. In contrast, by _________,__________.There are many reasons accounting for _________. Firstly, _________.Secondly,__________. Finally,_________. As a result,_________.As far as I am concerned,_________. For one thing,__________.For another,________. In brief, I hold that__________.高分模板3As is shown in the chart / graph / diagram / table above, __________ has charged drastically in the past _________. While ___________,now the percentage of__________ is __________. Meanwhile, the number of _________ has soared up to ________.There are mainly two possible reasons contributing to the rapid changes. The first is that _________. Secondly,__________.In my point of view, the changes have a great influence on _________. At the same time,_______. To sum up ,_________.英语四级作文佳句1. I reckon, 用于阐述自己的观点，比“I think I”更正式。

英语四级图表类作文万能模板【优秀3篇】（经典版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如总结报告、合同协议、规章制度、条据文书、策划方案、心得体会、演讲致辞、教学资料、作文大全、其他范文等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor. I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!Moreover, our store provides various types of classic sample essays, such as summary reports, contract agreements, rules and regulations, doctrinal documents, planning plans, insights, speeches, teaching materials, complete essays, and other sample essays. If you want to learn about different sample formats and writing methods, please pay attention!英语四级图表类作文万能模板【优秀3篇】英语四级考试中作文是拉分差距较大的题型，如何让自己的作文更出彩？除了考前多练笔，根据模板进行仿写也是非常实用的方法，下面是本店铺整理的英语四级图表类作文万能模板【优秀3篇】，在大家参照的同时，也可以分享一下本店铺给您最好的朋友。

四级图画型作文模板英语Four-Level Picture Composition Essay Template.Level 1: Describe the Setting and the Main Figures.In this picture, we see a scene taking place in [setting]. The main figures in the picture are [list ofmain figures]. They are engaged in [description of their actions].Level 2: Describe the Supporting Figures and Background.In the background, we can see [supporting figures].They are [description of their actions]. The setting is surrounded by [description of the surroundings].Level 3: Interpret the Picture's Message.This picture conveys a message about [theme]. Thefigures in the picture represent different aspects of thistheme. For example, the [main figure] represents [symbolism]. The [supporting figures] represent [symbolism].Level 4: Extend the Picture's Implication.The message of this picture can be extended to our own lives. It reminds us of the importance of [moral or lesson]. We should all strive to [positive action] in our own lives.Example Composition.[Picture Description]In the picture, we see a young couple walking hand-in-hand down a path. The path is lined with trees and flowers, and the sun is shining brightly overhead. The couple is smiling and laughing, and they look very happy.[Level 1]In this picture, we see a scene taking place in a park. The main figures in the picture are a young couple. Theyare engaged in walking hand-in-hand.[Level 2]In the background, we can see a few other peoplewalking in the park. They are enjoying the nice weather and the scenery. The setting is surrounded by trees and flowers.[Level 3]This picture conveys a message about love. The couplein the picture represents the joy and happiness that love can bring. The path lined with trees and flowers represents the journey of life that the couple will walk together. The sun shining brightly overhead represents the hope and optimism that the couple has for the future.[Level 4]The message of this picture can be extended to our own lives. It reminds us of the importance of love. We shouldall strive to find someone to love and to share our liveswith. Love can make us happy and fulfilled, and it can give us hope for the future.。

英语四级作文写作模板（图表类）英语四级作文写作模板（图表类）模版一As is shown in the chart / graph / diagram / table above, __________ has charged drastically in the past _________. While ___________,now the percentage of __________ is __________. Meanwhile, the number of _________ has soared up to ________.There are mainly two possible reasons contributing to the rapid changes. The first is that _________. Secondly,__________.In my point of view, the changes have a great influence on _________. At the same time,_______. To sum up ,_________.图表所示，__________急剧充电在过去的_________。

虽然___________，现在的百分比__________是__________。

同时，已经飙升了________，_________。

主要有两个原因可能造成的快速变化。

第一是_________。

其次，__________。

在我的`角度来看，在_________的变化有很大的影响。

在同一时间，_______。

综上所述，_________。

模版二What is shown in the chart / graph / diagram / table above indicates that in recent years, more and more people pay attention to _________. The number of those who _________ has increased ________, and furthermore,____________.There are two factors responsible for the changes. In the first place,_________.Moreover,__________. Yet, it is noticeable that __________. From the analysis, we can safely draw the conclusion that__________. It is possible that in the future, the tendency will__________.在上面图表所示，表示，近年来，越来越多的人注重_________。

专四图表作文模板英文回答：The chart illustrates the changes in the number of students attending university in three different countries over a period of ten years, from 2010 to 2020. As can be seen from the graph, the number of students in China has significantly increased, while the number of students inthe United States and the United Kingdom has remained relatively stable.In 2010, the number of students in China was around 25 million, which was significantly lower than the number of students in the United States and the United Kingdom, which were around 30 million and 20 million respectively. However, over the next ten years, the number of students in China increased rapidly, reaching over 40 million in 2020. In contrast, the number of students in the United States and the United Kingdom only increased slightly, with the United States reaching around 32 million and the United Kingdomreaching around 22 million in 2020.There are several reasons for this trend. Firstly,China has experienced rapid economic growth over the past decade, which has led to an increase in the number of families who can afford to send their children to university. Secondly, the Chinese government has invested heavily in education, with the aim of producing more highly skilled graduates who can contribute to the country's economic development. Finally, the popularity of online education has also contributed to the increase in the number of students in China.中文回答：这张图表展示了三个不同国家在2010年至2020年期间大学生人数的变化情况。

(一）常用开头模板1.according to the chart, it is clear that._根据这个图表，可以很清晰地看出……2.the chart shows the turnover of...这个图表说明了……的逆转/3.many reasons contribute to the phenomenon.很多原因都能证明这个现象。

4.during the period from ...to..., 从……年……到……年，5.... decline/rose (quickly) from...to...……从……猛烈的/上涨下降到……6.seen from the chart, it can be included that...从图表中可以看出，它包括……i.among …，…account for… 在……中，……可以说明……8.it has increased by •••times as compared with that of... 它与……相比上涨了……9.there is an increase of in total this year.在全年有一个……的上涨。

10- it has been increased…已经上涨了……ii.it would be expected to increase times.预期上涨了……12.the table shows a ... increase over that of last year.这个表格显示出比去年上升了……13.it was decreased... than that of the year...与……年相比下降了……14.the total number was lowered by... 总数目下降了……15.it rose from .••percent of the total this year.全年上涨了……个百分点。

英语图表作文模板及精选4篇（经典版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如总结报告、合同协议、规章制度、条据文书、策划方案、心得体会、演讲致辞、教学资料、作文大全、其他范文等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor. I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!Moreover, our store provides various types of classic sample essays, such as summary reports, contract agreements, rules and regulations, doctrinal documents, planning plans, insights, speeches, teaching materials, complete essays, and other sample essays. If you want to learn about different sample formats and writing methods, please pay attention!英语图表作文模板及精选4篇学而不思则罔，思而不学则殆，以下是本店铺给大伙儿收集整理的英语图表作文模板及精选4篇，欢迎参考。

英语四级图表作文英语四级图表作文模板（精选8篇）图表作文的写作是英语四级里常会遇到的，下面，店铺为大家送上一些英语四级图表作文模板（精选8篇），希望能对大家有所帮助。

英语四级图表作文篇1As can be clearly seen from the graph/table/chart (As is shown in the table/figure), great changed have taken place in_______, The _________ have/has skyrocketed/jumped from _____ to _____.When it comes to the reasons for the changes, different people give different explanations. Here I shall just give a few.To begin with, ______What’s mo re,___________, Last but not least, ________.While it is desirable that ___________, there are still some problems and difficulties for __________ Firstly, __________ ,In addition, __________ ,In a word, __________英语四级图表作文篇2as is shown/indicated/illustrated by the figure/percentage in the table(graph/picture/pie/chart), ___作文题目的`议题_____ has been on rise/ decrease (goesup/increases/drops/decreases),significantly/dramatically/st eadily rising/decreasing from______ in _______ to ______ in _____. From the sharp/marked decline/ rise in the chart, it goes without saying that ________.There are at least two good reasons accounting for ______. On the one hand, ________. On the other hand, _______ is due to the fact that ________. In addition, ________ is responsible for _______. Maybe there are some other reasons to show ________. But it is generally believed that the above mentioned reasonsare commonly convincing.As far as I am concerned, I hold the point of view that _______. I am sure my opinion is both sound and well-grounded. 英语四级图表作文篇3It is obvious in the graph/table that the rate/number/amount of Y has undergone dramatic changes. It has gone up/grown/fallen/dropped considerably in recent years (as X varies). At the point of (接近)X1, Y reaches its peak value of (多少).What is the reason for this change? Mainly there are (多少) reasons behind the situation reflected in the graphic/table. First of all, (第一个原因). More importantly, (第二个原因). Most important of all, (第三个原因).From the above discussions, we have enough reason to predict what will happen in the near future. The trend described in the graph/table will continue for quite a long time (if necessary measures are not taken括号里的使用于那些不太好的变化趋势).英语四级图表作文篇4①As can be clearly seen from the graph/table/chart,great changes have taken place in __________②The __________ have/has skyrocketed/jumped from _____ to _____.③When it comes to the reasons for the changes, different people give different explanations. Here I shall just give a few.④To begin with, . 原因之一⑤Whats more, . 原因之二⑥Last but not least, 原因之三⑦While it is desirable that ___________, there are still some problems and difficulties for __________⑧Firstly, __________ 要点一⑨In addition, __________ 要点二⑩In a word, __________ 总结补充：1.As we can see from the chart/graph/table/diagram2.The chart/graph/table/diagram shows thatAs is shown in According to As can be seen in3. This chart/graph/table/diagram shows a sharp great//sudden/slow/rapid. increase/drop...4. To make a generalization; on the whole; in general/generally speaking英语四级图表作文篇5(1)模版1According to the chart / graph / diagram / table, we clearly learn that _________. As early as _________,___________. Then,_________. Last,__________. In contrast, by _________,__________.There are many reasons accounting for _________. Firstly, _________.Secondly,__________. Finally,_________. As a result,_________.As far as I am concerned,_________. For one thing,__________. For another,________. In brief, I hold that__________.(2)模版2What is shown in the chart / graph / diagram / table above indicates that in recent years, more and more people pay attention to _________. The number of those who _________ has increased ________, and furthermore,____________.There are two factors responsible for the changes. In the first place,_________. Moreover,__________. Yet, it is noticeable that __________.From the analysis, we can safely draw the conclusion that__________. It is possible that in the future, the tendency will__________.(3)模版3As is shown in the chart / graph / diagram / table above, __________ has charged drastically in the past _________. While ___________,now the percentage of__________ is __________. Meanwhile, the number of _________ has soared up to ________.There are mainly two possible reasons contributing to the rapid changes. The first is that _________. Secondly,__________.In my point of view, the changes have a great influence on _________. At the same time,_______. To sum up ,_________.英语四级图表作文篇6Students tend to use computers more and more frequently nowadays. Reading this chart, we can find that the average number of hours a student spends on the computer per week has increased sharply. In 1990, it was less than 2 hours; and in 1995, it increased to almost 4 hours, and in 2000, the number soared to 20 hours.Obviously computers are becoming increasingly popular. There are several reasons for this change. First, computers facilitate us in more aspects of life. Also, the fast development of the Internet enlarges our demands for using computers. We can easily contact with friends in remote places through the Internet. Besides, the prices of computers are getting lower and lower, which enables more students to purchase them.However, there still exist some problems, such as poor quality, out-of-date designs and so on. And how to balance the time between using computers and studying is also a serious problem. Anyhow, we will benefit a lot from computers as long as we use them properly.英语四级图表作文篇7It can be seen from the graph that the rate of car accidents in Walton City experienced rises and falls in 1990. From Januaryto March last year it increased by 45%. From March to June it dropped by about half the previous rate. From June to August there was a steep rise of 50%. After that, however, there was a steady decrease.There are several reasons for this improvement, but the following are the most critical ones. First, new traffic regulations have made drivers more careful. Second, more people are using bicycles for transportation. Finally, in the later part of the year good weather made the roads safer to drive on.I am confident that there will be even fewer car accidents in Walton in the future. First, major roads have been repaired and the number of public buses has been increased in the past few months. Moreover, a traffic safety campaign has made all the local people more aware of the dangers of unsafe driving.英语四级图表作文篇8As can be clearly seen from the graph/table/chart (As is shown in the table/figure), great changed have taken place in_______, The_________ have/has skyrocketed/jumped from _____ to _____. When it comes to the reasons for the changes, different people give different explanations. Here I shall just give a few.To begin with, ______What’s more,___________, Last but not least, ________. While it is desirable that ___________, there are still some problems and difficulties for __________ Firstly, __________ ,In addition, __________ ,In a word, __________ .【英语四级图表作文模板（精选8篇）】。

英语四级图表作文范文The bar chart shows the percentage of different age groups participating in outdoor activities. It is clearthat the 18-25 age group has the highest participation rate, while the 56-65 age group has the lowest. This indicatesthat younger people are more likely to engage in outdoor activities compared to older individuals.Moving on to the pie chart, it illustrates the distribution of outdoor activities among different genders. It is evident that male participation in outdoor activities is significantly higher than female participation. This suggests that there is a gender disparity when it comes to engaging in outdoor activities.Looking at the line graph, it displays the trend of outdoor activity participation over a period of five years. The graph shows a gradual increase in participation fromthe year 2015 to 2018, followed by a slight decrease in 2019. This indicates that overall, there has been apositive trend in outdoor activity participation over the past five years.The scatter plot depicts the correlation between income level and outdoor activity participation. It is clear that individuals with higher income levels tend to participate more in outdoor activities, while those with lower income levels have lower participation rates. This suggests that income level plays a significant role in determining outdoor activity participation.In conclusion, the various graphs and charts provide valuable insights into the factors influencing outdoor activity participation. It is evident that age, gender, time, and income level all have an impact on the likelihood of individuals engaging in outdoor activities.。

图表类英语四级作文Title: Analysis of Trends in Mobile Phone Usage Among College Students。

Introduction。

In recent years, the prevalence of mobile phones among college students has become a topic of interest. This essay aims to analyze the trends in mobile phone usage among college students based on statistical data and surveys.Trend 1: Increased Dependence on Mobile Phones。

One noticeable trend is the increased dependence of college students on mobile phones for various purposes. According to a survey conducted among 500 college students, 85% reported using their phones for more than four hours per day. This high usage can be attributed to the multifunctionality of smartphones, which serve as communication devices, entertainment centers, andeducational tools.Trend 2: Social Media Dominance。

Another significant trend is the dominance of social media platforms among college students. According to recent statistics, 95% of college students have at least onesocial media account, with the most popular platforms being Instagram, Snapchat, and TikTok. This trend highlights the importance of social connectivity and online networking in the lives of young adults.Trend 3: Impact on Academic Performance。

英语四级写作万能模板：图表型作文图表型作文此类作文要求考生从提示性文字或图表、图画入手，解释提示性文字、图表、图画反映出的问题，提出问题的危害性或解决这一问题的紧迫性;然后对问题展开分析，提出解决问题的方案或应对措施;最后一段要求考生表明自己的态度、做法等。

a.影响分析型关键句式The chart / graph/ table/ picture describes that the figure declines/ falls smoothly/ markedly. It indicates that…图表显示数字下降平缓，这表明….There may be a combination of factors which contribute to / are responsible for …可能是好几个因素造成的结果。

There may be several possible reasons to this phenomenon, which will be demonstrated as follows. 可能有几个原因导致了我们下面所要阐述的现象。

The significant effects of this phenomenon are undeniable, which can be concluded as the following aspects.这一现象的重大影响是不可忽略的，可大致归结为以下几个方面On one hand, …; On the other hand,…一方面，…;另一方面，…现象阐释类作文框架As is shown in the graph above, we can see clearly that great changes have taken place in …from…to…The first …years saw…The last …years witnessed …What are the reasons for the? On my standpoint, there are several as follows. First of all, (______). What is more, (______).Last but not theleast,(______).The significant effects of this phenomenon are undeniable, which can be concluded as the following aspects. On one hand, …; On the other hand,…76 wordsb.问题解决型关键句式It is important that effective actions should be taken to prevent the situation. 采取有效措施防止这种情况的发生很重要。

四级最全作文模板及范文一、图表作文。

1. 描述图表。

范文：The chart shows the changes in the number of people using the Internet in three countries over a ten-year period. As can be seen from the chart, the number of Internet users in the United States has been increasing steadily over the past decade, reaching 80 million in 2010. In contrast, the number of Internet users in China has experienced rapid growth, rising from 20 million in 2000 to 400 million in 2010. Meanwhile, the number of Internet users in India has also shown a significant increase, reaching 100 million in 2010.2. 分析原因。

范文：The reasons for the rapid increase in Internet users in China and India are multifaceted. Firstly, the rapid economic development in both countries has led to an increase in people's disposable income, enabling more people to afford Internet access. Secondly, the widespread availability of smartphones and other mobile devices has made it easier for people to access the Internet. Finally, the government in both countries has been actively promoting Internet use, leading to a greater awareness and adoption of Internet technology.3. 提出建议。

英语四级作文图表万能英语四级作文图表万能模板为帮助大家写好英语四级作文，下面是店铺给大家分享的的英语四级作文图表万能模板，供大家阅读参考。

英语四级作文图表万能模板as is shown/indicated/illustrated by the figure/percentage in the table(graph/picture/pie/chart), ___作文题目的议题_____ has been on rise/ decrease (goesup/increases/drops/decreases),significantly/dramatically/st eadily rising/decreasing from______ in _______ to ______ in _____. From the sharp/marked decline/ rise in the chart, it goes without saying that ________.There are at least two good reasons accounting for ______. On the one hand, ________. On the other hand, _______ is due to the fact that ________. In addition, ________ is responsible for _______. Maybe there are some other reasons to show ________. But it is generally believed that the above mentioned reasons are commonly convincing.As far as I am concerned, I hold the point of view that _______.I am sure my opinion is both sound and well-grounded.英语四级作文万能句型1) As for me, I am on the latter part of the argument. The reasons are as follows. 至于我，我支持争论的后半部分。

英语四级作文图表类Title: Analysis of Internet Usage Trends AmongDifferent Age Groups in China。

In recent years, with the rapid development of technology, the internet has become an indispensable part of people's daily lives. This trend is particularly evident in China, where internet usage has surged across all age groups. In this essay, we will examine the internet usage trends among different age groups in China based on the provided chart.Firstly, let's take a look at the overall internet penetration rate among different age groups in China. As illustrated in the chart, the highest internet penetration rate is observed in the age group of 18-24, with over 90% of individuals in this age bracket using the internet. This indicates that young adults are the most active users of the internet in China. Following closely behind are the age groups of 25-34 and 35-44, with internet penetration ratesof approximately 85% and 80% respectively. It is worth noting that even the older age groups, namely 45-54, 55-64, and 65 and above, exhibit significant internet usage, with penetration rates ranging from 60% to 70%.Next, let's delve deeper into the internet usage patterns among different age groups. Among the younger population aged 18-24, social media platforms and instant messaging apps are the most popular internet activities. This age group tends to spend a considerable amount of time on platforms such as WeChat, Weibo, and Douyin, engaging with peers and consuming content. They also use theinternet for entertainment purposes, such as streaming videos and playing online games.In contrast, the older age groups exhibit slightly different internet usage preferences. While they still utilize social media and messaging apps to some extent, their internet activities are more diverse. For instance, individuals aged 35 and above are more likely to use the internet for online shopping, banking, and accessing news and information. E-commerce platforms like Taobao and have seen a significant increase in usage among middle-aged and elderly users, indicating a shift towards online shopping behavior.Furthermore, the chart reveals an interesting trend regarding internet usage among the elderly population aged 65 and above. While their internet penetration rate is relatively lower compared to younger age groups, it isstill noteworthy that nearly 70% of individuals in this age bracket use the internet. This suggests that digital literacy among the elderly is improving, and they are gradually embracing technology in their daily lives. Common internet activities among this demographic include communication with family members, online reading, and accessing health-related information.In conclusion, the chart provides valuable insightsinto the internet usage trends among different age groupsin China. While young adults dominate the online landscape, internet usage among older age groups is also significant. Understanding these trends is essential for businesses and policymakers to tailor their strategies and services tomeet the diverse needs of various age demographics in the digital era.。

写作According to the bar chart / pie chart / line graph displays the changes in the number of____________（图表整体趋势）. There was an increase in ____________（图表细节）.At the point of ____________, ____________reaches its peak value of ____________(数据或变化). What has caused these changes? There are mainly three reasons. Firstly, ____________ （原因一）.Secondly, ____________（原因二）. The number of ____________ increased over the period. ____________ rose by _________ from ________ to ________________. And there were____________. Finally, ____________（最后一个原因）.In conclusion / We can safely draw the conclusion that ____________（结论）. Therefore, ____________（进一步谈论更多个人想法）.It seems to me that the cartoon / drawing is sending a message about ____________（图画内容），which reveals ____________（稍作评价）.In my perspective of view, ____________ （表明个人观点）。

四级作文万能模板图表类
口语化图表解读。

哇，看这图表，简直就像一座过山车！忽高忽低，这就是咱们的数据走势啊！
这左边一溜儿往上冲，说明啥？说明这几年某事儿可是越来越火，大家都抢着干呢！右边这儿，虽然有点波折，但总体上还是往上涨的，就是说虽然中间出了点小插曲，但大方向没错，咱们还是一路向前。

话说回来，为啥会这样呢？我猜啊，可能是因为现在的科技太发达了，大家都愿意尝试新事物。

再加上政府也给力，给了不少好政策，这不是双剑合璧，让这事儿越来越火吗？
总的来说啊，这图表告诉我们，某事儿现在火得很，未来也肯定差不了！大家一起加油干，准没错！。

大学英语作文英语四级写作图表类作文模板It seems to me that the cartoon / drawing is sending a message about ____________(图画内容)，which reveals ____________(稍作评价).In my perspective of view, ____________ (表明个人观点)。

Apparently, ____________(将个人观点和图片内容相结合，得出观点。

)For one thing, ____________(从社会角度论证). For another thing, ____________(从个人角度说明). For example, ____________(自己、朋友或他人，只要自己知道或听过的例子).Last but not least, ____________(从反面角度谈论). As a result, the drawer of the illustration is urging us to_____________(建议或措施).Only in this way can we ____________(展望结果). In conclusion / To my understanding, ____________(再次表明观点或态度). We should____________(进一步说明个人的观点). 图表模板：According to the bar chart / pie chart / line graph displays the changes in the number of____________(图表整体趋势). There was an increase in ____________(图表细节). At the point of ____________, ____________reaches its peak value of____________(数据或变化). What has caused these changes? There are mainly three reasons. Firstly, ____________ (原因一).Secondly, ____________(原因二). The number of ____________ increased over the period. ____________ rose by _________ from ________ to ________________. And here were____________. Finally, ____________(最后一个原因). In conclusion / We can safely draw the conclusion that ____________(结论). Therefore, ____________(进一步谈论。